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Fig. 9. Mobile and immobile fraction, {theta}m/{theta} and {theta}im/{theta}, as a function of volumetric water content, {theta}, for unsaturated flow conditions. Note that {theta}m/{theta} + {theta}im/{theta} = 1. Solid line was fitted by eye based on our measurements and dotted line corresponds to {theta}m/{theta} = 0.853 as reported by De Smedt and Wierenga (1984) for unsaturated glass beads.